Unable to create bootable dvd

[James B. Byrne]

I have downloaded FreeBSD-11.0-RELEASE-amd64-dvd1.iso.

I have verified the sha512 hash:
FreeBSD-11.0-RELEASE-amd64-dvd1.iso: OK

I have checked that the ISO is bootable:
file /var/data/disk_images/FreeBSD/FreeBSD-11.0-RELEASE-amd64-dvd1.iso

/var/data/disk_images/FreeBSD/FreeBSD-11.0-RELEASE-amd64-dvd1.iso: ISO
9660 CD-ROM filesystem data '11_0_RELEASE_P1_AMD64_DVD' (bootable)

However, no matter what technique I use I cannot obtain a bootable DVD
from this image, or any other FreeBSD provided ISO file either.

growisofs -speed=1 -dvd-compat -Z
/dev/sr0=/var/data/disk_images/FreeBSD/FreeBSD-11.0-RELEASE-amd64-dvd1.iso
fdisk -l /dev/sr0
. . . a long long time -
fdisk -l /dev/sr0
Note: sector size is 2048 (not 512)

Disk /dev/sr0: 2930 MB, 2930409472 bytes
255 heads, 63 sectors/track, 89 cylinders
Units = cylinders of 16065 * 2048 = 32901120 bytes
Sector size (logical/physical): 2048 bytes / 2048 bytes
I/O size (minimum/optimal): 2048 bytes / 2048 bytes
Disk identifier: 0x00000000

Now, to verify the software and dvd drive that I am using for this I
created a dvd from a CentOS-6.7 image.  This works fine.

fdisk -l /dev/sr0
Note: sector size is 2048 (not 512)

Disk /dev/sr0: 1991 MB, 1991245824 bytes
64 heads, 32 sectors/track, 474 cylinders
Units = cylinders of 2048 * 2048 = 4194304 bytes
Sector size (logical/physical): 2048 bytes / 2048 bytes
I/O size (minimum/optimal): 2048 bytes / 2048 bytes
Disk identifier: 0x75c649ae

    Device Boot      Start         End      Blocks   Id  System
/dev/sr0p1   *           1        1899     7778304   17  Hidden HPFS/NTFS
Partition 1 has different physical/logical endings:
     phys=(1023, 63, 32) logical=(1898, 63, 32)


SO, what is going on?  What is different about the FreeBSD ISO that
prevents it from creating a bootable DVD,


I have tried this on A CentOS-8 linus host and a Windows7Pro host and
cannot obtain a bootable DVD.  I can create bootable DVD from the
CentOS ISO on both.


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James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
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